Increase method visibility level for Teradata. (#49858)

Increase the visibility on these functions to unblock Teradata's current implementation.

Author: davinchia

airbyte-cdk/java/airbyte-cdk/README.md

@@ -174,7 +174,8 @@ corresponds to that version.
 
 | Version    | Date       | Pull Request                                                | Subject                                                                                                                                                        |
 |:-----------|:-----------|:------------------------------------------------------------|:---------------------------------------------------------------------------------------------------------------------------------------------------------------|
-| 0.48.1     | 2024-11-13 | [\#48482](https://github.com/airbytehq/airbyte/pull/48482)  | Adding support converting very large numbers via BigInteger  l                                                                                                 |
+| 0.48.3     | 2024-12-23 | [\#49858](https://github.com/airbytehq/airbyte/pull/49858)  | Relax various Destination CDK methods visibility.                                                                                                              |
+| 0.48.1     | 2024-11-13 | [\#48482](https://github.com/airbytehq/airbyte/pull/48482)  | Adding support converting very large numbers via BigInteger                                                                                                    |
 | 0.48.0     | 2024-10-23 | [\#46302](https://github.com/airbytehq/airbyte/pull/46302)  | Add support for file transfer                                                                                                                                  |
 | 0.47.3     | 2024-10-23 | [\#46689](https://github.com/airbytehq/airbyte/pull/46689)  | Split DestinationAcceptanceTest                                                                                                                                |
 | 0.47.2     | 2024-10-21 | [\#47216](https://github.com/airbytehq/airbyte/pull/47216)  | improve java compatibiilty                                                                                                                                     |

airbyte-cdk/java/airbyte-cdk/core/src/main/resources/version.properties

@@ -1 +1 @@
-version=0.48.2
+version=0.48.3

airbyte-cdk/java/airbyte-cdk/db-destinations/src/main/kotlin/io/airbyte/cdk/integrations/destination/jdbc/typing_deduping/JdbcDestinationHandler.kt

@@ -74,7 +74,7 @@ abstract class JdbcDestinationHandler<DestinationState>(
     ): ResultSet = dbmetadata.getTables(catalogName, id.rawNamespace, id.rawName + suffix, null)
 
     @Throws(Exception::class)
-    private fun isFinalTableEmpty(id: StreamId): Boolean {
+    protected open fun isFinalTableEmpty(id: StreamId): Boolean {
         return !jdbcDatabase.queryBoolean(
             dslContext
                 .select(
@@ -211,7 +211,8 @@ abstract class JdbcDestinationHandler<DestinationState>(
     }
 
     @Throws(SQLException::class)
-    protected fun getAllDestinationStates(): Map<AirbyteStreamNameNamespacePair, DestinationState> {
+    protected open fun getAllDestinationStates():
+        Map<AirbyteStreamNameNamespacePair, DestinationState> {
         try {
             // Guarantee the table exists.
             jdbcDatabase.execute(

airbyte-cdk/java/airbyte-cdk/db-destinations/src/main/kotlin/io/airbyte/cdk/integrations/destination/jdbc/typing_deduping/JdbcSqlGenerator.kt

@@ -403,7 +403,7 @@ constructor(
             .columns(buildFinalTableFields(columns, metaFields))
     }
 
-    private fun insertAndDeleteTransaction(
+    protected open fun insertAndDeleteTransaction(
         streamConfig: StreamConfig,
         finalSuffix: String?,
         minRawTimestamp: Optional<Instant>,
@@ -507,7 +507,7 @@ constructor(
         return createSchemaSql.sql
     }
 
-    protected fun createTableSql(
+    protected open fun createTableSql(
         namespace: String,
         tableName: String,
         columns: LinkedHashMap<ColumnId, AirbyteType>